It’s an emerging technology.

The newest heavy hitter in the competitive world of broadband service.

It offers high-speed access.

Broadband over Power Lines (BPL) is also

known as Power line communication , power line carrier (PLC),Power line Digital Subscriber Line (PDSL), mains communication, power line telecom (PLT), power line networking (PLN).

Digital Subscriber Line(DSL)

Fiber Technologies

Coaxial Cable

Wireless

Coaxial cable: Cable tv get a high speed

connection to the internet.

Performance does not depend on distance

from central cable office.

Disadvantage of sharing the bandwidth

involved in it.

Wireless: Send and receive data from any

location within signal reach of an access

point.

Broadband over Power Line (BPL) is a

technology that allows voice and Internet

data to be transmitted over utility power

lines.

It is an access solution that transmits data

over electricity wiring.

In-House BPL : Electrical wiring is to

network computers and devices within

in a buildings.

Access BPL : It is a technology that

provides broadband access over

medium voltage power lines.

The idea is not new.

Electric companies have used this

technology for years to monitor the

performance of power grids.

The transmission speed was slow.

Most BPL systems are designed to

operate in the frequency spectrum from

1.705 to 30 MHz, but occasionally up to 80

MHz, using MV and LV power distribution

network lines.

POWERLINE

INFRASTRUCTURE

In addition to

lines, power

grids use

generators

substations

transformers

and other

distributors

that carry

electricity from

the power

plant all the

way to a plug

in the wall.

Access BPL equipment consists of:

Injectors: BPL signals may be injected onto MV power lines with the injectors.

Extractors: Provide interface between the medium power lines & the customers. BPL extractors are usually located at each LV distribution transformer feeding a group of homes

Repeaters: For long runs of MV power lines, repeaters are employed to maintain the required signal strength.

BPL SYSTEM

The last mile is the final step that carries Internet into the subscriber's home or office.

In the various approaches to last-mile solutions for BPL, some companies carry the signal in with the electricity on the power line, while others put wireless links on the poles and send the data wirelessly into homes.

CONFIGURATIONS FOR LAST MILE

BPL MODEM The signal is received by a

power line modem that

plugs into the wall.

BPL modems use silicon

chipsets specially designed

to handle the work load of

pulling data out of an

electric current.

BPL modem has roughly

the size of a common

power adapter.

It plugs into a common

wall socket, and an

Ethernet cable running to

your computer finishes the

connection

High Speed Internet Access to Rural areas

as well.

Upload speed that’s as fast as your

download speed

Flexible of modification

Simplicity of installation

There would be no need to build a new infrastructure. Anywhere there is electricity there could be broadband. So cheaper.

Secure data-encryption:The signals are not in the air where neighbours or others could potentially snoop your service. Powerline adapters are sold with encryption turned on . Secured network through a simple password-setting process .

Improves the competitiveness of the

market for broadband services.

One wire offers both power and your high-

speed communications needs.

Broadband Services

High Speed Internet Access Voice Over IP Video Streaming Home Networking Home AutomationHome Security Systems Telemedicine Applications

Interference issue: The system is expected to use frequencies of 1 to 30 MHZ which has been used by radio operators. Power lines are shielded & have potential to interfere with radio communications.

Harmonics & Intermodulation: The interference caused by BPL harmonics is not reduced even if the fundamental frequency is notched. Intermodulation products are frequently encountered in power lines at bad joints, which readily produce mixing.

Noise: The power lines are inherently a very noisy environment. Every time a device turns on or off, it introduces a pop or click into the line.

BPL signals cannot readily pass through transformers, as their high inductance makes them act as low-pass filters.

The system is based on shared bandwidth, in part due to the tree design of theinfrastructure.

Product

Feature

Dial

up

ADSL BPL Customer Benefit

Speed Slow Fast Faster Saves time

Convenient

access

No No Yes Convenience, available through virtually all

power points

Cost Cheap Expensive Cheap Cost effective service

Phone/data

cabling

required

Yes Yes No No added costs – no expensive in-house

data cabling required or expensive wireless

router

Access to the

Internet

Yes Yes Yes Web browsing

VoIP phone

access

included

No No Yes Cost savings

Integrated

Internet and

VoIP

No No Yes Ease of use and cost savings

Always on No Yes Yes Convenience

Cheap VoIP

calls

No No Yes Cost savings, no additional hardware or

software required

Suitable for

video

No Some higher

speeds

Yes Value for money, fun to use

COMPARISON

•BPL has been considered as a potential 3rd wire that can compete with cable & DSL internet services .

•Electrical power lines offer a clear benefit ,but it is important to remember that BPL provisioning does not come without the additional infrastructure costs.

• As required, further refinements will be made to BPL technologies to enable them to reduce harmful emissions.

ANY QUERIES ?